機器
asphalt
breaker
bridge
concrete
construction
crusher
crushes
demolition
destroy
destruction
dig
digger
dust
equipment
excavation
excavator
ground
hammer
heavy
hydraulic
illustrative editorial
industrial
industry
jackhammer
large
machinery
outdoor
people
pneumatic
police
power
reinforced
repair
road
rock
serengeti
site
stone
structure
technology
tool
travel
vehicle
work